Snippets 4/5 are already set up for this. The code is here: https://github.com/mozilla/snippets-service/
A couple other items that might be worth verifying when we do this: * are application cache settings on snippets 6/7 the same as on snippets 4/5? * is newrelic set up for snippets 6/7 (host and application)?
looks like we're good to go here. i just did a chief deployment and it was pushed to all of the web heads, including 6 and 7. http://snippetsadm1.private.phx1.mozilla.com/chief/snippets.prod/logs/9feecb28cd45acafdf1648f5a150663368232a26.1374790576